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USB 3.2 standard

27.02.2019

Representatives of the USB Implementers Forum (USB-IF) announced the future of the USB standard. It was decided to stop at the USB 3.2 standard and make it the main and only one for the next few years.

This important decision on the popular standard was made because there are several versions of the third generation of USB in the world: 3.0, 3.1 and 3.2 - the last one was approved in 2017. All of them have different specifications, differing from each other in data transfer speed: first, speeds of 5 Gb / s were reached, then up to 10 Gb / s and up to 20 Gb / s in the case of USB 3.2.

However, due to confusion in specifications and an attempt to make backwards compatible connectors, there was a complete mess. Data transfer rates of 5 Gbps were mandated by the USB 3.0 and USB 3.1 Gen 1 specifications. 10 Gbps could be achieved with the USB 3.1 Gen 2 specifications. USB 3.2 specifications, by using two data lanes in a certified cable instead of one, they allowed both exchange at the level of 10 Gb / s and 20 Gb / s. In the case of only one line, depending on the version of the host controller, USB 3.2 can also work at 5 Gb / s.

As a result, the USB-IF organization was fed up with the confusion over the specifications of the third generation USB interface, and they decided to make USB 3.2 the main standard for this connector for the coming years. Thus, from the middle of 2019, all manufacturers will start releasing their devices with a USB 3.2 port, and there is no talk of USB 4.0 yet.

USB 3.2 will have three speed options: SuperSpeed USB, SuperSpeed USB 10Gbps, and SuperSpeed USB 20Gbps. For ordinary people, this is understandable and clearly speaks of the capabilities of USB ports.

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